Holcim has been granted a patent for a multi-layered thermoplastic roofing membrane. The membrane features three layers, each incorporating magnesium hydroxide and calcium carbonate within a polyolefin-based thermoplastic resin, enhancing its structural and thermal properties. GlobalData’s report on Holcim gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Holcim, Battery metal recycling was a key innovation area identified from patents. Holcim's grant share as of June 2024 was 54%. Grant share is based on the ratio of number of grants to total number of patents.
Multi-layered thermoplastic roofing membrane with magnesium hydroxide
The granted patent US12044013B2 describes a multi-layered thermoplastic roofing membrane designed for enhanced durability and performance. The membrane consists of at least three distinct layers: a top layer containing magnesium hydroxide within a polyolefin-based thermoplastic resin, an upper middle layer that incorporates both magnesium hydroxide and calcium carbonate in a similar resin, and a lower layer that also includes these materials. The claims specify various weight percentages for the components in each layer, such as the top layer containing 20-50 wt% magnesium hydroxide and being devoid of calcium carbonate, while the upper middle layer can contain 10-40 wt% magnesium hydroxide and 10-50 wt% calcium carbonate. Additionally, the lower layer may have a magnesium hydroxide content ranging from 0-6 wt% and a calcium carbonate content of 25-75 wt%.
The patent further outlines a roof system that integrates this thermoplastic membrane with a substrate, which can be a roof deck, insulation board, cover board, or an existing membrane. The membrane is designed to adhere to the substrate, with at least 50% of its surface area bonded, potentially using polyurethane or pressure-sensitive adhesives. The claims also mention the possibility of including a reinforcement layer between the upper middle and lower layers, as well as the option for co-extrusion of the top and upper middle layers. This multi-layered approach aims to enhance the structural integrity and thermal performance of roofing systems, making it a significant development in roofing technology.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
